To determine the performance of the cotton harvesting machine attachable to a tractor on some cotton varieties and to evaluate an economic analysis

SUMMARYThe aim of this study was to evaluate economical analysis by determining of aharvest machine type applicable a tractor on some cotton varieties. As a material;Nazilli 84-S, Nazilli 342, Barut 2005 and Carmen varieties and N727/C125 lineincluding Gossypium hirsutum L. were used in this study.This study was carried out at Cotton Research Institute research field in 2005.Field trials were conducted in split plot design with four replications. Each plot wascomprised of 12 rows each 120 m long and 70 cm apart from each other. Butmachine picking plots were harvested 100 m long, hand picking plots 20 m long.Defoliant application (60 cc/da) was made when machine picking plots were 60%boll opening growth period. Hand picking plots were harvested two times as firstand second picking but machine picking harvest was made at first time.Statistical analyses have been examined with the help of JMP statisticalpackage program in α level 0.05.The waste of seed cotton preharvest and postharvest and remains on plantswere determined both machine and hand picking plots. Extra losses ratio due to themachine harvest was 2.71%in Nazilli 342, 2.77%in Nazilli 84-S, 3.07%inN727/C125, 3.57%in Barut 2005 and 5.74%in Carmen.This investigation showed that; the cost of hand picking is 54.00 YTL/da, costof machine picking is 52.58 YTL/da when the seed cotton yield was 300 kg/da. Ifthe seed cotton yield is 350 kg/da, cost of picking is 63.00 YTL/da by hand but54.10 YTL/da by machine. If the seed cotton yield is 400 kg/da, cost of picking is72.00 YTL/da by hand but 55.61 YTL/da by machine.In the result of this study was exposed that; the cost of cotton harvest can bereduced by machine picking.